370
FZUS51 KLWX 021735
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
135 PM EDT Tue Sep 2 2025

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow.  Waves flat where waters are iced over.

ANZ500-030800-
135 PM EDT Tue Sep 2 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

High pressure north of the area will remain in place through the
middle of the week. The next front approaches the waters late
Thursday, followed by a stronger cold front on Saturday. A Small
Craft Advisory may be needed Wednesday night through Friday night,
with the strongest winds expected Thursday into Thursday evening.

$$

ANZ535-030800-
Tidal Potomac from Key Bridge to Indian Head-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 1 ft or less.
.WED...SE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ536-030800-
Tidal Potomac from Indian Head to Cobb Island-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves 1 ft or less.
.WED...E winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.FRI...SW winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ537-030800-
Tidal Potomac from Cobb Island to Smith Point-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...E winds around 5 kt. Waves 1 ft or less.
.WED...NE winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ530-030800-
Chesapeake Bay north of Pooles Island-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves flat.
.WED...E winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. A
chance of showers.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.SAT...W winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ531-030800-
Chesapeake Bay from Pooles Island to Sandy Point-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves flat.
.WED...E winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A
chance of showers.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ538-030800-
Patapsco River including Baltimore Harbor-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...E winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves flat.
.WED...E winds around 5 kt. Waves 1 ft or less.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Waves 1 ft. A chance of showers.
.FRI...S winds 5 to 10 kt. Waves 1 ft or less.
.SAT...W winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ539-030800-
Chester River to Queenstown MD-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...SE winds around 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ532-030800-
Chesapeake Bay from Sandy Point to North Beach-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...E winds around 5 kt. Waves flat.
.WED...E winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to 3 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 to
3 ft. A chance of showers.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ540-030800-
Eastern Bay-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...N winds 5 kt. Waves less than 1 ft.
.TONIGHT...E winds around 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft. A chance of showers.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming NW. Waves 1 ft. A chance of
showers.

$$

ANZ533-030800-
Chesapeake Bay from North Beach to Drum Point-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...E winds around 5 kt. Waves 1 ft or less.
.WED...NE winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft...
building to 3 ft in the afternoon.
.THU NIGHT...S winds 15 to 20 kt. Waves 2 to 3 ft.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ541-030800-
Choptank River to Cambridge MD and the Little Choptank River-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...N winds 5 kt. Waves less than 1 ft.
.TONIGHT...E winds around 5 kt. Waves flat.
.WED...N winds around 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.FRI...S winds 10 to 15 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ542-030800-
Patuxent River to Broomes Island MD-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 5 kt. Waves less than 1 ft.
.TONIGHT...E winds around 5 kt. Waves 1 ft.
.WED...NE winds around 5 kt. Waves 1 ft.
.WED NIGHT...S winds 5 kt. Waves less than 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU NIGHT...S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.FRI...S winds 5 to 10 kt. Waves 1 ft.
.SAT...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of showers.

$$

ANZ534-030800-
Chesapeake Bay from Drum Point to Smith Point-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...N winds 5 to 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.WED...NE winds 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 kt...increasing to 15 to 20 kt in the afternoon.
Waves 2 to 3 ft.
.THU NIGHT...S winds 15 to 20 kt. Waves 3 ft.
.FRI...S winds 10 to 15 kt. Waves 2 to 3 ft.
.SAT...S winds 10 to 15 kt...becoming N after midnight. Waves 2 ft.
A chance of showers.

$$

ANZ543-030800-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
135 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...N winds 10 kt. Waves 1 ft.
.TONIGHT...NE winds around 5 kt. Waves 1 ft or less.
.WED...N winds 5 kt. Waves flat.
.WED NIGHT...S winds 5 to 10 kt. Waves 1 ft.
.THU...S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
.THU NIGHT...S winds 15 to 20 kt. Waves 2 ft.
.FRI...S winds 10 to 15 kt. Waves 1 to 2 ft.
.SAT...S winds 10 to 15 kt...becoming N after midnight. Waves 1 ft.
A chance of showers through the night.

$$